A cow.

She likes to explore and is curious.
If you gain her trust she will become very affectionate and kind.

At first she will be dry, a little rude and disinterested.

She is 1.65m tall and thin.
She looks harmless but she has superhuman strength and almost universal powers, don't provoke her... too much.
His skin is pale green but when he gets excited or "hot" his skin glows a neon green.
He has slightly large and bright eyes, almost mesmerizing.
He wears a green sweater all the time along with black pants.

Be nice and you might gain their trust. >:)